If not, an underwriter will assume you're taking advantage of the system and do what's necessary. 

The building already has water damage to it and needs work. 

When I post a property through my brokerage's back end systems, it goes on the MLS (or the Manhattan equivalent), and then that syndicates out to dozens and dozens of other websites, including Zillow, Trulia and Realtor.com.

I do 8-12% vacancy on multis depending on area.Capex should be higher, presumably you have two HVAC systems, two breaker panels, etc etc.Also, leasing fees (I don't understand why nobody includes these - they can be substantial especially on a multi which is generally going to have higher turnover than SFH).

Did they miss the water leaking?

You can also, use CRM systems (a paid version), or if you plan to go big down the road, some crowdfunding platforms offer their back office that will include not just tracking but also the whole portal to use for investors and syndicators (after a deal closes).Best!

As long as someone is not trying to sell me some new real estate system or new strategy for investing. 

Most Wholesalers dont allow assignment of contracts because it just creates complications that can result in problems that can get the sales person (in my case we are all licensed by the state) in hot water.

I also need the typical cost of things like Lights, Gas, Water.

This project is near its completion and should open up in late 2018.Water Street Project: This is a public project that will help to connect many of Tampa’s attractions and facilities together via walking paths, 13 acres of public park, gathering areas, and other outdoor infrastructure.